1. Cheap perfume is an absolute waste of your money.
2. Listen more. Speak less. Write always.
3. Books are the finest version of people. It's more rewarding to stay with them.
4. No, you've never been there and you've never done that.
5. People with money are just lucky.
6. Quit smoking earlier.
7. Get life insurance and a memorial plan earlier.
8. Stock-up on books. You'll need bigger bookshelves.
9. Don't buy DVDs. The digital copies will be eventually free.
10. Back-up your MP3 collection and physically list down your playlists. Don't rely on iPods.
11. Notebooks and fountain pens will not be out of fashion. But a Moleskine is overrated and overpriced. There will be classy-enough knock-offs.
12. You will need a good coffee press and manual grinder. You overrated drip coffee.
13. Marriage and children are the best things that ever happened to you.
14. Don't buy cheap shoes. A good leather, high-quality pair can last you a lifetime.
15. You will acquire too many jackets and sweaters.
16. Your razor does not need four blades, not even three blades.
17. When running, apply Virgin Coconut Oil to areas where chaffing occurs.
18. Discipline yourself to stop at four drinks.
19. Run some more. The 30-something you ran stronger.
20. You lost a lot of money paying for the interest of a 5-year car plan.